Caulophyllum thalictroides sunan botanical ne na tsire-tsire masu tsire-tsire waɗanda aka fi sani da blue cohosh ko tushen papoose. Yana cikin dangin Berberidaceae kuma asalinsa ne a gabashin Arewacin Amurka. Itacen yana da ganyen shuɗi-kore kuma yana samar da ƙananan furanni masu launin rawaya-kore a cikin bazara. Tushen tsiron ya kasance a al'adance da ƴan ƙasar Amirka da masu aikin likitanci na jama'a ke amfani da shi don magance cututtuka iri-iri, da suka haɗa da ciwon haila, ciwon haihuwa, da ciwon haɗin gwiwa. Duk da haka, ya kamata a lura cewa shukar ta ƙunshi alkaloids masu guba masu guba kuma yakamata a yi amfani da su a ƙarƙashin jagorancin ƙwararren likita.